1. Important Safety Information
Always read and understand all safety warnings and instructions before operating this tool. Failure to follow the warnings and instructions may result in electric shock, fire, and/or serious injury.
- Eye Protection: Always wear appropriate eye protection (safety glasses or goggles) when operating the chainsaw.
- Hand Protection: Wear sturdy work gloves to protect your hands.
- Foot Protection: Wear non-slip, protective footwear.
- Hearing Protection: Use hearing protection, especially during prolonged use.
- Work Area: Keep the work area clear of debris and ensure good lighting. Do not operate in explosive atmospheres, such as in the presence of flammable liquids, gases, or dust.
- Secure Grip: Always maintain a firm grip on the chainsaw with one hand.
- Avoid Accidental Starting: Ensure the safety switch is engaged when not actively cutting.
- Proper Body Positioning: Keep your body balanced and avoid overreaching.
- Kickback Prevention: Be aware of potential kickback. Avoid cutting with the tip of the guide bar.
- Proposition 65 Warning: This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
2. What's in the Box
Your WORKPRO Mini Chainsaw package includes the following components:
- Saw body
- Two saw chains
- Guide bar
- 4.0Ah Lithium-Ion battery
- Battery charger
- Oil bottle (empty)
- User guide
- Carrying box
Figure 2.1: Complete WORKPRO Mini Chainsaw kit, including the saw body, battery, charger, two chains, guide bar, oil bottle, and a durable carrying case.
Figure 2.2: The included portable tool box provides convenient storage and transport for the chainsaw and its accessories.
3. Setup
3.1 Battery Charging and Installation
Before first use, fully charge the 4.0Ah Lithium-Ion battery using the provided fast charger. A full charge takes approximately 2 hours.
- Connect the charger to a power outlet.
- Insert the battery into the charger. The indicator lights on the battery will show charging progress.
- Once fully charged, remove the battery from the charger.
- To install the battery, align it with the battery slot on the bottom of the chainsaw handle and slide it in until it clicks securely into place.
Figure 3.1: The 4.0Ah Li-ion battery and fast charger, capable of a full charge in approximately 2 hours.
3.2 Chain and Guide Bar Installation
The chainsaw comes with the chain and guide bar uninstalled for safety and packaging. Follow these steps for proper installation:
- Unscrew the housing-cover knob on the side of the chainsaw and remove the cover.
- Carefully place the chain around the guide bar, ensuring the cutting teeth are facing the correct direction (refer to the diagram on the guide bar).
- Align the chain and guide bar with the sprocket and slot on the chainsaw body.
- Replace the housing-cover and tighten the knob.
Figure 3.2: Visual guide for chain replacement, showing unscrewing the knob, removing the cover, placing the chain and guide bar, and tightening the cover.
Figure 3.3: Simplified steps for quick chain installation, emphasizing the knob and chain placement.
3.3 Chain Tensioning
Proper chain tension is crucial for safe and efficient operation. Adjust the screw to achieve the correct chain tightness (3-5mm play is ideal). A loose chain can derail, and an overly tight chain can cause excessive wear and reduce performance.
Video 3.1: A brief demonstration of the WORKPRO Mini Chainsaw, showing its compact size and basic operation. This video highlights the product's appearance and initial handling.
3.4 Oiling the Chain
This chainsaw does not have an automatic oiling system. It is essential to manually oil the chain and guide bar before each use and periodically during operation (every few cuts) to ensure smooth performance and prevent overheating. Use standard motor oil or chainsaw bar oil with the provided oil bottle.
- Fill the provided oil bottle with appropriate lubricant.
- Apply a small amount of oil directly along the guide bar and chain.
- Run the chainsaw briefly to distribute the oil.
4. Operating Instructions
4.1 Basic Operation
The WORKPRO Mini Chainsaw is designed for one-handed operation, offering ease of use and maneuverability.
- Ensure the battery is fully charged and properly installed.
- Hold the chainsaw firmly with one hand on the non-slip handle.
- Depress the lock-out button (safety switch) with your thumb.
- While holding the lock-out button, press the ON/OFF switch (trigger) to start the chain.
- Release the trigger to stop the chain.
Figure 4.1: The dual safety lock design requires both the lock-out button and ON/OFF switch to be engaged for operation, preventing accidental starts.
4.2 Cutting Techniques and Applications
This mini chainsaw is ideal for light-duty cutting tasks such as pruning branches, cutting small logs, and general wood cutting for gardening or home improvement projects.
- Pruning: Easily cut through branches up to 4.7 inches in diameter.
- Wood Cutting: Capable of cutting logs up to 11-12 cm (approx. 4.7 inches) in about 10 seconds, depending on wood hardness.
- One-Handed Operation: Weighing just 3.97 lbs, it reduces arm fatigue and allows for easy use in tight spaces.
Figure 4.2: The chainsaw demonstrates high-efficiency cutting, capable of handling wood up to 4.7 inches in diameter.
Figure 4.3: The lightweight design (3.97 lbs) allows for comfortable one-handed operation, reducing user fatigue.
Figure 4.4: Versatile applications include tree pruning, general home improvement tasks, and logging of smaller wood pieces.
5. Maintenance
5.1 Battery Care
To prolong the life of your battery, recharge it every 3-6 months if it is not used often.
5.2 Chain Sharpening and Replacement
The saw chains may become dull over time. You can either sharpen them using a suitable file or replace them with new ones. The kit includes two saw chains for convenience.
5.3 General Cleaning
Regularly clean sawdust and debris from the chain, guide bar, and internal mechanisms to ensure optimal performance and longevity. Use compressed air to blow out sawdust from the chain area after removing the side cover.
6. Troubleshooting
If you encounter any issues with your WORKPRO Mini Chainsaw, consider the following common solutions:
- Chainsaw not starting: Ensure the battery is fully charged and properly seated. Check that the safety lock-out button is fully depressed before pulling the trigger.
- Poor cutting performance: Check chain tension; adjust if too loose or too tight. Ensure the chain is properly oiled. The chain might be dull and require sharpening or replacement.
- Chain derailing: This is often caused by incorrect chain tension (too loose) or improper installation. Re-tension the chain or re-install it correctly.
- Overheating: Ensure the chain is adequately lubricated. Avoid continuous heavy cutting without breaks.
For persistent issues or problems not listed here, please refer to the official WORKPRO customer support channels.
7. Specifications
| Feature | Detail |
|---|---|
| Brand | WORKPRO |
| Model Number | W125188A |
| Style | 20V Brushless Motor |
| Power Source | Battery Powered |
| Voltage | 20 Volts (DC) |
| Wattage | 80 watts |
| Item Weight | 3.97 lbs (8.36 pounds with packaging) |
| Product Dimensions | 17.56 x 11.31 x 4.79 inches |
| Blade Length | 6.3 Inches |
| Battery Type | Lithium Ion (4.0Ah) |
| Motor Type | Brushless High-efficiency Motor |
| Handle Material | Rubber |
| Special Features | Brushless, 100° Rotatable Blade Guard, Lock-off Switch |
Figure 7.1: The upgraded brushless motor offers longer run times, greater steadiness, more power, and less wear compared to pure copper motors.
Figure 7.2: The 6.3-inch low kickback bar is designed for efficient cutting of larger limbs and trunks.
Figure 7.3: The protective baffle can be rotated from 0 to 100 degrees for enhanced safety during operation.
8. Warranty and Support
For warranty information, technical support, or to purchase replacement parts, please refer to the official WORKPRO website or contact their customer service directly. The user guide (PDF) is also available for download from the Amazon product page for detailed information.
User Guide (PDF): Download Here
